Glass-cutting apparatus



A. M. MAZER GLAS S `CUTTING AP-PARATUS JuneV 17, 1930.

Original Filed May 15, 1925 5 Sheets-Sheet 1 INVENTQR m6, ww. MW

June 17, 1930.` A. M. MAZER GLASS CUTTING APPARATUS original Filed May 15, 1925 5 sheets-sneet l 2 v. MJ WAW u .t QM u..

INVENTOR June 17, 1930.

A. M., MAZER y GLASS CUTTING APPARATUS Original Filed May l5, 1925 5v sheets-sheet s INVENTOR Patented June 17, 1930 UNITED STATES PATENT FICE.

I epass-CUTTING, ABBAnATUs Application 1e6.,1\1ayk 1,5, 1925, Serial NQ. 30,448i Renewed October 14, 1327.

The present invention relatesbroadly to the art of glass working, and more particularly to improved apparatus for eii'ectingthe cutting of glass as required to obtain true edges,` eiiect the elimination ofdefects, or

both. Y

At the present time it is customary inthe operator to place a'y sheet of glass on a cutting` table, and by individual cutting strokes effect the subdivision into pieces-oi'maximum size having regardY to the shape of the glass and the defects therein. Different types of cutter frames have also been employed for this purpose.

' The present invention has for its object the provision of a cutting apparatus adapted to eifect'either a single cutting operation vor a plurality of' cutting operations simultaneously, whereby the time requiredfor cutting up a sheet of glass is materiallyreduced, and the effort on the part of the operator is correspondingly` lessened.

In the accompanying drawings there are shown for purposes of illustration only certain preferred embodiments of the present invention,l it'be'ing understood that the drawings do not define the limits of my invention as'changes yin the construction and operation disclosedtherein may be ymade without departing either from the spirit of the invention or the scope of my broader claims.

In the drawings:

Figure 1 is a top plan view, partly broken away, illustrating vone form of apparatus embodying the present invention;

Figuie 2 is a side elevatiom partly broken awayV and partly in section, of theapparatus Shown in Figure, l;` i v Figure is end elevation oi' the structure Shown @Figures 1 andai c Figure 4i isv a detail sectional View on an enlarged scale illustrating the construction 4,5 and operation of one oftheA cutters;

Figure 5 isa detail elevational view, on an enlarged scale, of a portion of .one of the cutters; l

Figure 6 is an end elevation of a portion of 59 the structure shown in Figure 5;

Figure 7 isa detail perspective View of a portion of the cutter guide;

Figure 8 is a perspective view of a portion ofthe cover for the guide shown in Figure'7 Figure 9 is a detail sectional View through a portion of the table illustrating the manner oi' cooperation of the cutter with the table ;l art to which the invention relates for 'an yFigure l() is a view corresponding to Figure 5 illustrating a modiedl form of; cutter;

Figure 11 is a view similar to Figure 1; but 60 largely diagrammatic, for the purposeof illustrating another embodiment otj-thel present invention; y A

Figure 12 is adetail view, partly in elevation and partly in section, illustrating a porf tion of the control mechanism with the apparatus shown in Figure 11i; l

Figure 13 is a detaily sectional view ofl a portion oi'jthemovable mounting permitting adjustment of the cutter;

Figure 14 is a view similar to Figure 13 illustrating the opposite end ofthe adjustable mounting;

Figure 15 is a vertical sectional View on the line-XV-XV of Figure 14 looking-in the direction of the arrows; and,

Figure 16y is a side elevational view'illustrating a Jform of resetting mechanism for the cutter.y

'In carrying out ythe present invention` it is contemplated that there will be utilized a table for supporting the glass, the table being in cooperative relation to a pluralityl of cutters so that relative movement between the cutters and table can be produced to effect 4 the cutting operation. The cutters arev under the control oi an operator whereby many cutters kat will4 may be'kept in such position as to produce the desired cuttingy operation.

vlteienringmore particularly to Figuresk 1 90 to 9v of the drawings, there is illustratedan apparatus or the general character herein con t'emplated comprising a table supporting frame 2 of any desired construction', pre-ilerably having side girder-s 3 between which are-'95 mounted anti-friction rollers 4: to*` facilitate movement of the table 5.

It will be understood that the table may have any dimensions desired, the size being limited only with respect to the size of the 5100 sheets of glass to be cut by the apparatus. Preferably, the table 5 is divided into two parts simultaneously movable. The front part of the table which is normally kin a position to receive the sheet of' glass which is to be cut up may be designated the cutting portion, while the other part-6 of the table is adapted to receive the cut sheet and may therefore be termed the Vreceiving portion.

For producing movementof the table asrv desired, it may be provided von its under surset forth.

face with a rack bar 7 adapted to be engaged by the teeth 8 of an interruptedgear mounted on a shaft 9 extending transversely of the capable-of exerting no holding or driving action on the table. The length of the rack 7 and the numbervof teeth 8 is suchthat a single revolution of the' shaft 9 will be effective for producing a complete moveinent'ofthe table. Upon the completion of this movement the toothless space 14'will be disposed opposite the rack, wherebyV the counterweights will be efiective for returning the table as before The operation of the Vtable may be controlled in any desired manner, but is 'conveniently controlled by providing afoot lever 15 at the front end of the table having a rpivotal mounting 16 intermediate its ends. rlChis foot 'lever cooperates with a stop lever 17 having a pivotal mounting 18. Upon depressing the outer end of the lever 15, the 'stop lever 17 will be swung in a clockwise directionabout its pivotal mounting thereby pulling a detent 19 thereon out of position in a recess 20 in the drum 21 on the shaft l9. This releases the shaft for rotation. Continued depression of the foot lever .will bring the contacts 22 into engagement thereby energiz- `ing the motor which drives the shaft 9, for

eifectingiotation'of the shaft. Upon com-V mencenientV of rotation of the shaftthe` opcrator releasesthe foot lever,thcperiphery ofthe drinn 21 being effective for holding the stop lever inV such position that the contacts 22 are in engagement. This condition will continue until the shaft 9 hasmade a complete revolution, whereupon the fdetent 19 will again drop into' the recess 20, breaking the circuit to the motor and stopping rotation of the shaft 9 in such positio'nthat the table is free to'return under the influence of the counterweights.

. son of the tongue incasso Carried by the table supporting frame at substantially the intermediate portion there- 0f may be a cutter housing 23 extending upwardly around the edges of the table 5 so as not to interfere with the travel thereof. tending transversely of the housing is a cutter support 24 which comprises a bar 25 having a series of forwardly projecting portions 26 each adapted to form a pivotal mounting for one of the cuters. Each of the cutters comprises a 'channely shaped guide 27, as clearly shown in Figure 7, having secured to its Vupper end a spring housing 28. Projecting rearwardly from the guide 27 is an extension 29 adaptedV toV havea pivotal connection 30 with the desired projection 26. This permits the cutter guides to swing relatively to the support and occupy either the full line position shown in Figure 4, or the dotted line position indicated therein. EX- tending upwardly through each of the guides 27 is a cutter stem 31 attached at its lower end to a. cutter 32 of any desired construction and abutting at its upper end against a disk fadaped to be engaged by the lower vend of Y a spring- 34 and normally urged'downwardly thereby. The upperend of the spring is engaged by a screw plug 35 in the spring housing by means of which the initial load on the spring may be varied at will.

The movementrof the stem 31 inra downward direction is controlled bya recess 36 therein into/which projects a pin37 carried by the detachable guide cover 38. ThisY guide cover is adapted to'be ouicldy applied or removed by rea-` may be interlcclied. upon 'relative longitudinal movement with the hook shaped portions 40 on the guide 27.

The spring housings 28 are conveniently constructed of magnetic material, and cooperating witheach of the cutters is aholding magnet 41, the magnets being carried in suitable spacedreiation in any desired inanner as by blocks 42 of insulating material.

Normally, the magnets 41 are adapted to be energized forholding the cutters-in their inoperative full line positionindicated in Figure 4. Vhen .the magnets are V(le-energized,

it will be apparent that the cutters Will move l y from the full line position of this figure to the dotted line position, this movement bringing the cutters 32 into cooperative relation with a sheet of glass carried bythe table for insuring the desired cutting thereof upon 39 atits lower end which relative movement between the cutters and the f glass. For controlling the de-energization of eachof the holding magnets there is provided a plurality of keysk43 suitably mounted adjacent the front'of thetable and each having a pivotal mounting 44. Each key has secured thereto an extension-:45 having" an intermediate portion 46 of insulating material andfa contact portion 47.V Normally all of the contact portions are in contact with the upper versely of the table andfhaving Cil surface of a contact barr48'extending transa connection 49 witlione side of a sourcey of current. S. Eachy of the contact portions 47 has a connection 50 leading therefrom to its corresponding magnet, the circuit through each magnet being completed by a connection` 51 leading to the opposite side of the source of current. VViththis construction, asvr long as Figure 4, the magnets will be energized for 'holding the cutters in inoperative position.

Upon depressing any key, however, the corresponding magnet will be de-energized and the cutters released thereby will dropv to operative position. Y y v As clearly indicatediin Figure 9` tlietable 5 is preferably provided with a series of long-itudinally extending channels 52 spaced to accurately receive the cuttersy whereby upon relative movement between the ltable and the Acutters the cutting edges ofthe cutters are prevented from injury. The front end ofthe table may also be provided' with a series of "l," feeding projections 53 spaced to insurevpassage between adjacent cutters. Y.

In operation, a sheet of glass is placed on the cutting portion ofthe table, the table at this time being in normal position as indicated in Figures 1 and 2. It may be assumed,

as a matter of illustrationonly, that the ma-- chine has a total' of sixty cutters, and that the sheet lto be cut islsixty-two inches in width.

The operator will so positionthe sheet thata margin projects a small amount beyond the line of cut of the twooutside cutters, land he will depress the Zero key to `trim the first edge. He will then look over the sheet carefully to indv defects.

visible between the lines twenty-four and twenty-five on the tableI and also lines fortythree and forty-four, he will' depress keys twenty-four and twenty-iivev upon finding the l first defect and keys forty-three and forty- 'four upon finding the second' defect to thereby eifect the movement intooperative position of the respectiveV cutters controlled" thereby in such manner that y'upon movementof the sheet a' cut will be made on-y each side and fully examinedr the sheet and released the necessary cutters' he will depress the sixty key to controlthe trimming of the opposite edge of the sheet, and the apparatuswill bei-'n condition for the cutting operation. After the proper keys havek all beenl vactuated to lower the desired cutters into operative position, the foot pedal 15 will be depressedr andthe table moved to carry the sheet of glass on the cutting portion beneath the cutters. As thetable reaches the limit of' its travel, a projection 54 thereon will engagefthe pawl 55l having a pivotal mounting 56 on the lower end of a lever 57 having. a pivotalemounting 58. This Iengagement between the projection 54-and the the keys remainm their full line position indicatedin yrotating in a clockwise Assuming` suoh defects to be closely adjacent to each of the defects. `Having carea 'second set of cutters may there f is indicated of this` character,

pawl'will tend to swing'the lever 57 in accunterclockwise direction thereby'- causing `the same'. to move the link 59l to: the left as viewed innFigurov 4y which will in turn swing ra lever Qihaving a pivotal mountingl a, countercloclrwise directionV against the action" ofy a tension spring 62. The lower end ofthe lever 60V is s o positioned that upon movement of thefleve'r. in a. counterclockwise direction the transversely extending rodl 63 carriedv75 thereby willy engage the spring' housings of i the cutters and'move the same from thev dotted linef position to their yful'l'l-ine position in Y which position they are held bythe retaining magnets. In this manner the cutters which` have been inv operation arev automatically reset by the concluding cutting movement of the table. 1

Uponv the return movement ofthe table,

-the projection 54 will pass freely Vunder the; v

pawl 55 which is free tov swingin a direction clusion of the return'movement the cut glass= will be on the receiving portion 6k of the table 'in position to be removed either by the, same `operator or another operator as desired.

n lieu of the cutters 32, ordinary diamond point cutters 32 as well understood in the art, as shown for example in Figure 10.

With the constructionbefore described, it will be apparent thatI ifthe cutters, are noi'- mallysp'aceda distance of an inch, it always be necessary to effect thefremoval of an inch of glass irrespective size .ofl any defect in the intermediate portion of thev sheet. In order to overcome this 'difficulty, the cutters may 'all be made adjustableC so that the'exact lineof cut may be varied,`or be utilized. Where the second setis providedthe cutters will preferably havea lateral'movement substantially equal to the adjacent fixed cutters whereby a cutmay be made at any point intermediate the fixed cutters. In FiguresY 11 to 16k of the drawings a 'combination ofA cutters cutter support 124. This adjustable cutter supportV may vbe ofthe construction before described, but hasits ends 125 extended through the housing 123` sov as tobe guided.

This pawl', as viewed,

may be substituted''therefor4` will ofthe widthor` distance between the.

the housing 123:;l carrying- ,a xed cutter support 124 and an adjustable of the adjustable support is an adjusting de- .Y ofFigure ed to be controlled by the operator for 40 vice 126 by means of which the entire sup- J port may be moved transversely ofthe table to any desired position. In Figure 1l the 'two sets of Acutters are indicated diagrammatically, the line of cut of each cutter coinciding with the centers of the circles rC which designate theV cutters. The out-er cutters VC of the first set are shown as being in operative position whiletwo of the intermediate cutters of the adjustable series are shown as being in operative position. In the showing l1 the adjustable cutters have been soadjust'ed that their line of out is exactly intermediate the Vline of cut of adjacent fixed cutters. It will'be obvious that by reason of this construction the adjustable cutters may be used independently of the fixed cutters or they may beV used conjointly therewith. Vhere the double set of cutters is provided, there will also preferably be utilized a double keyboard as shownin the drawings whereby operation of the proper cutter is facilitated, the, keys of one row controlling the stationary cutters and the keys of the other row controlling the adjustable cutters.

It will be understood that in order to give rigidity to the cutters, for properly holding the cutters during the cutting operation, there may beY provided clearly shown lin Figure 4for the non-adjustable cutters. A similar adjustable bar 164 may be provided for the adjustable cutters.y as illustrated in .Figure 16.

YThe advantages of the present invent-ion arise from the provision of the cutting apparatusembodying a plurality of cutters adapteffecting a plurality of cuts simultaneously.

I Further advantages arise from the provision of t-he control mechanism for the cutters, and .from the .provision of adjusting means whereby the cutters may be adjusted for cutting at any desired intermediate points.

I claim: .f

l. In aglass cutting apparatus, a plurality of .individually mounted cutters independently movable at all times, any number of which may be utilized for a simultaneous cutting operation at the will of an operator upon relative movement between the cutters and the glass to be cut, means for 4mounting the cutters for such relative movement, means for normally maintaining allv of the cutters out of cutting position, means controlling the release of the number of cutters it is desired to have operative at any time, and means for simultaneously returning all of the released 'cutters to and retaining them in nonoperative 'position upon completion of the cutting operation.

2. In a glass cutting apparatus, a glass support, cutters for cutting the glass on the sup` port, means for causing relative movement bea notched bar as' 3. In a glass cutting apparatus,la plurality of Vgroups off individually mounted, independently movable cutters so arranged that any number of cutters of any group may be Vutilized for simultaneous cutting operation at the will of an operator upon relative movement between the cutters and the glass to be cut, means for effecting adjustment of the cutters of one group, means providingfor such relative movement, and a group of control devices remote from the cutters and readily accessible to the operator for controlling the number of cutters any time.

4. In a glass cutting apparatus, a-row of relatively ixedcutters, a second rowof cuttersadjustable transversely with respect to theA relatively fixed cutters, means for simultaneously adjusting said last-mentioned cutters, means controlling the number of cutters in operation at any time, including a group of control devices remote from the cuttersk and readily w accessible to the operator for controlling relative movement between the cutters into and out of operative position. Y Y

5. In a glass cutting apparatus, a plurality of individually mounted cutters independently movable at all times and adapted to occupy operative or inoperative positions, means for producing relative movement between the cutters and a sheet of glass to` be cut, means automatically operable at a predetermined point during every such relativemovement for returning all of the used cutters to and retaining them in inoperative position after each cut until manually released, and means under the control of the operator for individually releasing and thereby controlling movement of any of said cutters to operative Y position.

6. In a glass cutting apparatus, a supportingtable, a plurality of cutters provided for cooperation therewith, means normally holding said cutters in inoperative position, and a control keyboard adjacent said table and having an individual key for controllingeach cutter, and means controlled thereby for rendering the holding means for each cutter inelective.

7. In a glass cutting apparatus, a glass supporting table, a plurality of cutters mountedV for cooperation with a sheet of glass on said inoperative position at y table, electric means normally maintaining all Y of said cutters in inoperative position, a cir-` cuit controlling keyboard cooperating with said table and comprising a key for each cutter, and means controlled thereby for eifecting the release of the respective cutters at will.

8. In a glass cutting machine, a plurality glass supporting table, lmeans to move the.v

table and cutters relative toeach other 'to 'cut the glass, means ,normally operated only at the conclusionof every cutting operation for simultaneously moving all .of the previously operative cuttersto and retainingtliein iniiioperative position luntilgmanually released, and means iunder the control-'ofangoperator `ilor controlling the release and thereby the movement of any of said cutters to operative position. 9. In a glass'cutting machine, a plurality oi movable cutters adapted to occupy either operative or inoperative positioiipmeans operative at the' conclusion of every cutting operation for effecting movement otall ofthe previously'operativecutters to inoperative position, and means under the control of an .operator kfor controlling the movement of any of said cutterszto operative position, said last mentioned means including ka keyboard remotely positioned relative to saidcuttersand having controlling keys operatively connected 4vvith `their respective cutters. t y

10. In a glass cutting machine, a Atable adaptedto support the glass to be cut, said tablehaving a plurality vof cutting lines in dicated thereon, cutters each bearing a definite relationto its respective cutting line, said cutting lines each having indicating indicia therefor, and .control keys for the respective cutters having indicia thereon corresponding u A"to the indicia for said cutting lines. v l l y 11. In-fa glass cutting apparatusa plurality of cutters-individually mounted andatall times individually movable -to either 4operiative or linoperative position, meansA effective for normally holding saidcutters in .inoperative position, nieansremote from but having connection with said cutters andy under the control of an operatorvforcontrolling the release individuallyof any ofsaidcutters at vWill, a glass supporting table, means,v for-moving the table and cutters rrelative toeacli rother to `cut the glass, Aand means opera-tive upon the .conclusion-` oi' yevery `cutting operation iter effecting return of the cutters l,to inoperative 'positionf Y l 12. In a glass cutting apparatus, a plural-` ity of cutters individually,mounted and at all times individually movable to4 eitlierope erative or .inoperative position, magnetic ymeans effective ornormally holding said 'cut-v tersin inoperative position, circuit control means remote fromibut having y'connectiiny With saidcutters and 'under the control otan operator i for controlling the releasei individually and at will of any of said cutters, and` means! operative `upon the conclusion-ofevery cutting operation foreffecting return of the released cutter-s tov inoperative position.y

13. In a glassfcutting apparatusagplural y ity of cutters-.individually mounted andat Acausing relative Imovementbetween the cut`y vters andglass to Ybe cut, means for effecting findividual -mevenientioi' the cuttersinto op- Y `erative position, :and lnieaiis yoperable;e-u-jtof.y

all times individually movable to .either operativeor inoperative positiommagnetic means effective for normally holding said cutters. in inoperative position, circuit control means remote from but having connection with said r cutters and under thecontrolof an operatorL v for-controlling .the release individually and at Will of any .of said' cutters, and means op. erative upon the conclusion of every cutting operation for electing'return of the released cutters to inoperative position, said control means comprising a keyboardhaving anindividually operable key foreach of said cutters. v i

14. In a glass cutting apparatus, a glass supporting table, a plurality of cutters any of which may be brought into operativecutting position at the will of an operator, means-to move the table and cutters relative ,to eachA other to ,cut the glass, and means automatically operative upon the conclusion of every cutting operation for moving saidcutters to and maintaining them in inoperative position by said relative movement.

`15. In a glass cutting apparatus.a glass supporting table, a plurality of `cutters coop-1 eratingv therewith, a receiving support for vcut'glass, andmeans cooperating with said table for' permitting idle movementof glass thereunder during movement of lthe table in f. .a cuttingdirection and eiiective forjtranserringcut glass to rsaid support uponivmovee` ment of the table ina return direction.

r16. In a glass cutting apparatus, a plural- 1 ity of cutters, vmagnetic means vfor each roi rsaid cutters andnormally operative for maintaining-the cutters in inoperative position, a

keyboard, a key in said keyboard for each ot said cutters, and circuits for said magnetic lmeans under the individual control of the ref f spective keys. y e c 17. In a glass cutting apparatus, a plurall ity of pivo'tallymounted cutters, magnetic meansfor each of said cutters, and means cooperating With the magneticmeans for .enorinally maintaining said cuttersin inoperative position, means controllingthe release of said cutters to operative position, and means oplerative upon the conclusion of each cutting operation Yfor swinging all ot the previously i operative cutters to inoperative position. l

18. In glass cutting apparatus, means for supporting the glass, a kplurality of cutters arranged inproximity thereto, means vfor inatically upon relative movement between such position and maintaining them in inoperative position. Y Y

1,9. Inglass cuttingfapparatus, ineansi'or supporting the glass, a plurality ,orient-ters .Y

ifi)

'SII

arranged above the glass, means for causing relativev movement between the cutters and glass to be cut, electrical control means oper-i,

able to eect individual and selective movement of the cutters into cutting position, and

means operable automatically at a predetermined time upon relative movement between the cutters and glassto be cut for automatically returning the. cutters to and maintain-- ing them in a iion-cuttingposition 20. In glass cutting apparatus, means for Vsupporting the glass, a plurality of cutters arsition and maintaining them iii inoperative position at-thve completion of thecutting operation.

`21. In glass cutting apparatus, means for supportingthe glass, a` plurality of cutters arranged above the glass, means for causing relative movement between the cutters and glass to be cut, a'groupof stationary control devices remote from the cutters, connections beytween said control devices and said cutters and under the control of an operator for eiecting individual and selective movement of the cutters into cutting position, and meansY operable upon relative movement between the cutters and glass to becutfor automatically yreturning the cutters to and maintaining them in a, non-cutting position at the completion of the cutting operation. Y

22. In glass cutting apparatus, means for 1 support-ing the glass, a plurality of pivotally mounted cutters above the glass, separate control means associated with each cutter and operable to effect individual and selective rocking of said cutters into cutting position,

and means iforsimultaneously rockingrall of' said cutters in the oppositedirection out of cutting position at the supporting the glass, a plurality of pivotally mounted cutters abovev the glass, means for effecting relative movement between the cutters and glass to Vbe cut, separate control means associated with each cutter and oper-y able to effect individua-l and selective rocking of Vsaid cutters into cutting position, and means operable upon relative movement between the cutters and glass to-be cutffor simultaneously rocking all of said'cutters in the opposite direction' to and maintaining them in non-cutting'position at thel completion of the cutting operation.

24. Inglass cutting'apparatus, means for Y supporting the glass, ka plurality of pivotally,

mounted cutters above the glass,`means`for completion ot' the cut-` Vting operation. l Y

23. In glass cutting apparatus, means for effecting relative'movement between the cutters and glass yto be cut, electrical control Vmeans having a part thereof remotel from the cutters and under the control of an operator Lfor ellecting individual and selective rocking of said cutters into cutting position, .and 1 means operable upon relative movement tbe-I tween the cutters and glass to be cut for si- 'multaneously rocking all of said cutters to and maintaining them in non-cutting position at the completion of the cutting opera-V tion. Y 25. In glass cutting apparatus, means for supporting the glass, a plurality of cutters above the glass, individual means for independently maintaining the cutters-in a noncutting position, a group of control devices remote from the cutters, connections between said cutters and said control devices and` under the control of an operator for rendering the holding means ineffective to'cause movement of the cutters into cutting posi-- tion, and means operable at the completion of the'cutting operation to again render the holding means 'elective whereby the previously operative cuttersare rendered inoperative.

26. Inrglass cutting' apparatus, a plurality of individually mounted cutters independently movable at all times into and out of cut-Y ting position, means for causing relative movement -between the cutters'and glass to be cut, a'manuallyVV operable common control kmeans remote from the cutters for veffecting selective movement of ysaid cutters `into cutting position, and means operable upon relative movement between the cutters and glass i' to be cut for returning the cuttersto and maintaining them in a non-cutting position Y at the completion of the cutting operation.

27. In glass cutting apparatus, aV plurality I of individually mounted cutters independent- Vly movable at all times into operative and inoperative-positions, an electro-magnet associated with each cutterv and adapted wl'ien energized to maintain i-ts respective cutter Vin` one of'its two positions and when de-energized to cause movement of said cutter to its other position, and means remote' roinsaid cutters and under the control of an operator for individually and selectively controlli-ng the energizingv and de'energizing of saidmagnets.r A Y l 28. In glass cutting apparatus a 'plurality of individually mounted 'cutters independent; ly movable at all times into and o'utof cutting position, a plurality of electro-magnets, one

being-associated witheach cutter and a plurality of control devices, one control device Vbeing provided for each cutter'and connected j 'in series withits respective'electro-magnet.-

29. In glass cutting apparatus, means for supporting the glass, a vplurality of cutters arranged above said supportingmea-ns, a 'Y separate electromagnet associated with eacb"'""" cutter, and a keyboard connected with said electro-magnets for controlling the movement of said cutters.

30. In glass cutting apparatus, means for supporting the glass, a plurality of cutters arranged above the glass, for each cutter, switch in each circuit under the control of an opera-tor to eEect individual and selective movement of the cutters into cutting position.

31. In glass cutting apparatus, means for supporting the glass, a plurality of cutters arranged above the glass, a mounting for said cutters, a group of stationary control devices independent of and remote from said mounting, and connections between said control devices and said cutters and under the control of an operator for eecting individual and selective movement ofthe cutters into cutting position.

32. In glass cutting apparatus, means for supporting the glass, a plurality of cutters above the glass, a mounting carrying said cutters, a key oard independent of said mounting for controlling the movement of said cutters, and operative connections between said keyboard and cutters.

33. In glass cutting apparatus, means for supporting the glass, a plurality of pivotally mounted cutters above the glass, electrical operating means for the cutters, means remote from said cutters for controlling said electrical operating means and under the control of an operator for eiecting individual y and selective rocking of said cutters into cutand means for rocking all of ting position, the cutters which are in cutting position out of such position at the completion of the cutting operation.

34. In glass cutting apparatus, a plurality of cutters independently movableat all times into and out of cutting position, a mounting for the cutters, manually operable common control means independent of and remote from said mounting, connections between said control means and said cutters for efecting selective movement of said cutters into cutting position, and means for returning the cutters to a non-cutting position at vthe completion of the cutting operation and for maintaining them in such position.

35. In glass cutting apparatus, a glass supporting table, a plurality of cutters arranged above the table, a mounting for the cutters, a keyboard independent of and remote from said mounting, and means operatively connected to said keyboard to effect a relative movement between said cutters and said table.

v36. In glass cutting apparatus, a glass supporting table, a plurality of cutters arranged above the table, operating mechanism` a plurality of associated with each cutter, control devices independent of the oy erating mechanism and arranged in keyboar formaan electro-magnet l a circuit therefor, and av tion, devices whereby upon actuationA of the control de.

vices the cutters may be selectively moved into cutting position from a single control Station.

37. In glass cutting apparatus, a glass supporting table, a plurality of cutters arranged above the tab-les, individual operating mechanism associated with each cutter, a plurality of stationary control devices independent of and remote from the operating mechanism and arranged in keyboard formation, and connections between said control devices and said operating mechanismswhereby upon actuation of the control devices the cutters may y into cutting position station. A

In testimony whereof I have hereunto set my hand.

from a single control ALFRED M. MAZER.

be selectively movedA 

